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git://git.code.sf.net/p/openocd/code
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3e6f9e8d1e
The semantics of "-work-area-virt 0" (or phys) changed with the patch to require specifying physical or virtrual work area addresses. Specifying zero was previously a NOP. Now it means that address zero is valid. This patch addresses three related issues: - MMU-less processors should never specify work-area-virt; remove those specifications. Such processors include ARM7TDMI, Cortex-M3, and ARM966. - MMU-equipped processors *can* specify work-area-virt... but zero won't be appropriate, except in mischievous contexts (which hide null pointer exceptions). Remove those specs from those processors too. If any of those mappings is valid, someone will need to submit a patch adding it ... along with a comment saying what OS provides the mapping, and in which context. Example, say "works with Linux 2.6.30+, in kernel mode". (Note that ARM Linux doesn't map kernel memory to zero ...) - Clarify docs on that "-virt" and other work area stuff. Seems to me work-area-virt is quite problematic; not every operating system provides such static mappings; if they do, they're not in every MMU context... Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
39 lines
1.0 KiB
INI
39 lines
1.0 KiB
INI
# NXP LPC2103 ARM7TDMI-S with 32kB Flash and 8kB SRAM, clocked with 12MHz crystal
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if { [info exists CHIPNAME] } {
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set _CHIPNAME $CHIPNAME
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} else {
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set _CHIPNAME lpc2103
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}
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if { [info exists ENDIAN] } {
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set _ENDIAN $ENDIAN
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} else {
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set _ENDIAN little
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}
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if { [info exists CPUTAPID ] } {
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set _CPUTAPID $CPUTAPID
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} else {
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set _CPUTAPID 0x4f1f0f0f
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}
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# LPC2000 -> SRST causes TRST
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reset_config trst_and_srst srst_pulls_trst
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# reset delays
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jtag_nsrst_delay 100
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jtag_ntrst_delay 100
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jtag newtap $_CHIPNAME cpu -irlen 4 -ircapture 0x1 -irmask 0xf -expected-id $_CPUTAPID
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set _TARGETNAME $_CHIPNAME.cpu
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target create $_TARGETNAME arm7tdmi -endian $_ENDIAN -chain-position $_TARGETNAME -variant arm7tdmi-s_r4
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# 8kB of internal SRAM
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$_TARGETNAME configure -work-area-phys 0x40000000 -work-area-size 0x2000 -work-area-backup 0
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# 32kB of internal Flash, core clocked with 12MHz crystal
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# flash bank lpc2000 <base> <size> 0 0 <target#> <variant> <clock> [calc_checksum]
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flash bank lpc2000 0x0 0x8000 0 0 $_TARGETNAME lpc2000_v2 12000 calc_checksum
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